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公开(公告)号：US20190053157A1
公开(公告)日：2019-02-14
申请号：US16059273
申请日：2018-08-09
Applicant: MediaTek Inc.
Inventor： Shiang-Jiun Lin , Per Johan Mikael Johansson , Li-Chuan Tseng , Gilles Charbit
Abstract: Various examples and schemes pertaining to differentiation of user equipment (UE) in narrowband IoT (NB-IoT) are described. A processor of a UE generates a signal containing UE-specific information that is specific to the UE. The processor transmits the signal to a network node of a wireless network. The processor then receives a response from the network node, the response comprising an access stratum (AS) configuration created by the network node based on the UE-specific information. The processor also applies the AS configuration which reduces power consumption of the UE.
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12.发明授权公开(公告)号：US10206176B2
公开(公告)日：2019-02-12
申请号：US15697423
申请日：2017-09-06
Applicant: MediaTek Inc.
Inventor： Wei-De Wu , Pei-Kai Liao , Hsuan-Li Lin , Shiang-Jiun Lin , Wei-Jen Chen , Li-Chuan Tseng
Abstract: Concepts and examples pertaining to efficient coding switching and modem resource utilization in wireless communication systems are described. A processor of a modem of a user equipment (UE), configured with at least a first-capacity decoder and at least a second-capacity decoder, receives a common virtual carrier (CVC), a dedicated virtual carrier (DVC), or both. The CVC contains common information shared by multiple UEs, control information for the UE, and/or data information related to first data destined for the UE. The DVC contains control information for the UE, the first data, or a combination thereof. The first-capacity decoder decodes data of a small size up to a low data rate. The second-capacity decoder decodes data of a large size up to a high data rate. The processor determines whether to decode the first data using the first-capacity decoder or the second-capacity decoder based on the data information in the CVC.
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公开(公告)号：US20170318620A1
公开(公告)日：2017-11-02
申请号：US15498763
申请日：2017-04-27
Applicant: MEDIATEK INC.
Inventor： Li-Chuan Tseng , Per Johan Mikael Johansson
Abstract: A novel and efficient DRX operation mechanism is proposed to maintain the reliability and energy efficiency for NB-IOT systems. In NB-IOT systems, the length of a NB-PDCCH (with repetition) and the interval between two NB-PDCCHs are extended and can be reconfigured by eNB for each UE. The eNB can also adaptively adjusts the DRX parameters accordingly. NB-IOT UE monitors the NB-PDCCH in DRX ON duration, which is configured in number of NB-PDCCHs. Specifically, if a DRX timer duration is configured by the eNB in units of a PDCCH period, the UE should calculate the timer in terms of number of PDCCH user-specific search spaces (USSs), or in terms of PDCCH subframes by multiplying the number of PDCCH periods with the PDCCH repetition level.
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公开(公告)号：US20160338143A1
公开(公告)日：2016-11-17
申请号：US15155082
申请日：2016-05-16
Applicant: MEDIATEK INC.
Inventor： Johann Johansson , Chia-Chun Hsu , Li-Chuan Tseng
CPC classification number: H04W76/28 , H04W52/0225 , Y02D70/00 , Y02D70/1262 , Y02D70/164 , Y02D70/24
Abstract: A method of extended DRX paging includes a base station that transmits extended DRX configuration information and a User Equipment (UE) receives the extended DRX configuration from the base station. The UE determines a first number of frames that are included in a hyper-frame based at least in part on the extended DRX configuration information and selects a hyper-frame number. The hyper-frame number is based at least in part on the extended DRX configuration information. The UE maintains a hyper-frame count and the hyper-frame count is incremented after each hyper-frame. The UE then goes into sleep mode and the UE determines a wake up time before a standard DRX cycle that occurs during the selected hyper-frame. The UE may also determine a first wake up time and a second wake up time based on the selected hyper-frame number and synchronization error between a first cell and a second cell.
Abstract translation: 扩展DRX寻呼的方法包括发送扩展DRX配置信息的基站，并且用户设备（UE）从基站接收扩展DRX配置。 UE至少部分地基于扩展的DRX配置信息来确定超帧中包括的第一数量的帧，并且选择超帧号。 超帧号至少部分地基于扩展DRX配置信息。 UE保持超帧计数，超帧计数在每个超帧之后递增。 然后，UE进入睡眠模式，并且UE在选择的超帧期间发生的标准DRX周期之前确定唤醒时间。 UE还可以基于所选择的超帧号码和第一小区和第二小区之间的同步误差来确定第一唤醒时间和第二唤醒时间。
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公开(公告)号：US20230102742A1
公开(公告)日：2023-03-30
申请号：US17939843
申请日：2022-09-07
Applicant: MEDIATEK INC.
Inventor： Li-Chuan Tseng , Chia-Hao Yu , Cheng-Rung Tsai , Chun-Fan Tsai , Jiann-Ching Guey
IPC: H04W74/08
Abstract: A method of acquiring timing advance (TA) for neighbor cells to reduce latency and interruption for inter-cell mobility is proposed. A UE is configured with a set of active cells for fast cell-switching. To reduce handover interruption, UE performs early RACH for potential target cells and obtains the TA of the potential target cells. In one novel aspect, for overhead reduction, a single RACH preamble may be received by multiple cells. Using a single RACH preamble, UE acquires TA for multiple cells, aiming at reducing the interruption due to RACH during handover. In another novel aspect, UE reports DL reception timing difference between the serving cell and the neighbor cell, and then adjust the TA for the neighbor cell accordingly.
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Patent Agency Ranking
公开(公告)号：US10602445B2
公开(公告)日：2020-03-24
申请号：US16144122
申请日：2018-09-27
Applicant: MediaTek Inc.
Inventor： Per Johan Mikael Johansson , Shiang-Jiun Lin , Li-Chuan Tseng , Gilles Charbit
Abstract: Various examples and schemes pertaining machine-to-machine (M2M) semi-persistent scheduling (SPS) in wireless communications are described. A user equipment (UE) receives a control signal from a network node of a wireless network. The UE applies, based on the control signal, an SPS configuration such that the UE enters one of one or more low-power modes between two adjacent SPS occasions.
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公开(公告)号：US20190104564A1
公开(公告)日：2019-04-04
申请号：US16144097
申请日：2018-09-27
Applicant: MediaTek Inc.
Inventor： Per Johan Mikael Johansson , Shiang-Jiun Lin , Li-Chuan Tseng , Gilles Charbit
Abstract: Various examples and schemes pertaining to conditional radio resource control (RRC) confirm messaging are described. A user equipment (UE) communicates with a network node of a wireless network. In communicating with the network node, the UE transmits a first message to the network node and receives a second message from the network node responsive to the transmitting of the first message. The UE also determines whether to transmit a third message to the network node acknowledging receipt of the second message. That is, transmission of the third message as a confirmation of receipt of the second message is conditional or otherwise optional so as to reduce signaling overhead.
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公开(公告)号：US20190059045A1
公开(公告)日：2019-02-21
申请号：US15999197
申请日：2018-08-16
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Li-Chuan Tseng
Abstract: A method of providing two cell barring indications via system information for UE cell selection or reselection is proposed. A first indication is a “cellBarred” indication for EPC, which indicates wither UE is barred to access EPC core network, and a second indication is a “cellBarred5GS” indication for 5GC, which indicates whether UE is barred to access 5GC core network. For E-UTRAN cell connected to both EPC and 5GC, the two indications are determined on demand, based on network preference and congestion control. For E-UTRAN cell connected to 5GC only, the value of the “cellBarred” indication is always barred. For E-UTRAN cell connected to EPC only, the base station may omit the “cellBarred5GS” field, and the existence of “cellBarred5GS” can act as an indication whether the E-UTRAN connects to 5GC.
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公开(公告)号：US10004099B2
公开(公告)日：2018-06-19
申请号：US15155082
申请日：2016-05-16
Applicant: MEDIATEK INC.
Inventor： Johan Johansson , Chia-Chun Hsu , Li-Chuan Tseng
CPC classification number: H04W76/28 , H04W52/0225 , Y02D70/00 , Y02D70/1262 , Y02D70/164 , Y02D70/24
Abstract: A method of extended DRX paging includes a base station that transmits extended DRX configuration information and a User Equipment (UE) receives the extended DRX configuration from the base station. The UE determines a first number of frames that are included in a hyper-frame based at least in part on the extended DRX configuration information and selects a hyper-frame number. The hyper-frame number is based at least in part on the extended DRX configuration information. The UE maintains a hyper-frame count and the hyper-frame count is incremented after each hyper-frame. The UE then goes into sleep mode and the UE determines a wake up time before a standard DRX cycle that occurs during the selected hyper-frame. The UE may also determine a first wake up time and a second wake up time based on the selected hyper-frame number and synchronization error between a first cell and a second cell.
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公开(公告)号：US20180132158A1
公开(公告)日：2018-05-10
申请号：US15801306
申请日：2017-11-01
Applicant: MediaTek Inc.
Inventor： Li-Chuan Tseng , Chia-Chun Hsu
Abstract: Concepts and examples pertaining to uplink-assisted mobility procedure in millimeter wave (mmWave) communication systems are described. A user equipment (UE) may receive an uplink (UL) signaling configuration from a source base station (BS) of a wireless network. The UE may periodically transmit a UL reference signal, which are measured by the source BS, in response to receiving the UL signaling configuration. The UE may receive a handover command from the source BS. The UE may also perform a handover procedure with a target BS in response to receiving the handover command from the source BS.
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